21489363

素因数分解:

$3^2\times 7^1\times {\mathrm{347}}^1\times {\mathrm{983}}^1$

素因数の和:1343

約数の個数: 24

約数和(自身を含む): 35612928

約数和(自身を除く): 14123565

約数列:

[1, 3, 7, 9, 21, 63, 347, 983, 1041, 2429, 2949, 3123, 6881, 7287, 8847, 20643, 21861, 61929, 341101, 1023303, 2387707, 3069909, 7163121, 21489363]

約数ペア:

[(1, 21489363), (3, 7163121), (7, 3069909), (9, 2387707), (21, 1023303), (63, 341101), (347, 61929), (983, 21861), (1041, 20643), (2429, 8847), (2949, 7287), (3123, 6881)]